I've had my 2.8Ghz up to 105 degrees C with the fans at about 6000 rpm if i remember correctly. Thats what video rendering does to your mbp...bloody glorious isn't it! The amazing thign was, even with the fans going nuts, it was still pretty quiet compared to how i imagined it to be.

I did test today on this, while encoding a dvd using handbrake. I was using SMC, but I didn't go nuts trying to keep things cool.

What I found is that it tends to get hot around the top left of the keyboard (where I would definitely class it as toasty), and from there it tends to conduct to the rest of the case. The temperature seemed to rise slowly (took about 30 minutes to go from 60C to 70C) I think my max temp was just under 80C.

I think the next revision could do with a couple of vent holes between the keyboard and the hinge just to let a little extra air out, as I think the lack of a clear escape path is the main issue with the design. If you do a lot of intensive stuff I would recommend placing it on a stand to get a bit more air flow, perhaps even with a fan.

NOTE: It was pretty warm here today (Got to 35 C outside today - and I don't have aircon)

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